Casting machine



Jan. 10, 1939.

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CASTING MACHINE Filed April l2, 1935 3 Sheets-Sheet 3 open flat, and toclose-so as to aid and assist the piston rod passes, the plate'having anex- 20 hollow castings without use of cores.

conjunction with the accompanying drawings, modates the piston rodholding bolt 23 when 30 parts being brokenaway, the mold sections beingtrol means of standard type. The plate Iii,l seer 85 Fig. 4 is a topplan view with the mold secbores 25a in the base platefl. The supportrods lo o inspection and removal of the castings, and closhas a crossrod 28 mounted in the upper end 45 over, there is no sand in the mold oron the have parts 32, 33 extending above and below 50 56 to a closedposition, an intermediate vertical censtop rods 35 secured thereto,which pass through ,Patented im 10,1939 I 2,143,032v

UNITED sTATEs PATENT oFElCE f CASTING MACHINE Albert W. Morris,Springfield, Mass., assignor to Morris Engineering Corporation, acorporation of `Rhode Island Application April 12, 1935', serial No.15,938 c Claims. (o1. 22--92i' My present invention pertains to the artof tral section or cheek` being used if desired. casting, and hasparticular reference to an im- The mold sections are held in uprightposition proved apparatus for facilitating and improvwhen closed, andare preferably adapted for ing the casting of metal articles. gravityfilling throughthe top, although the The casting of metal articles hasheretofore closed sections may be in anydesired position, beenaccomplished in sand molds vand in metal and the inlet may be at thebottom or side; the molds. 'Ihese molds have had disadvantageous moldissuitable for manual or for automatic features that have decreasedproduction and inpouring. creased cost; the sand molds must be carefullyReferring tol the drawings, the novel casting made up for each casting,and the metal molds apparatus comprises a base plate Ill, on which a.l0V have not been designed for facilitating inspecsupport cylinder II ismounted, as by means of tion or for quickly ejecting the castings. It isbolts I2. The interior of the cylinder is utithe principal object of myinvention to provide lizedras a piston chamber I3, in which a piston ametal mold construction which may be 'quickly I4 is adapted toreciprocate, the piston having and fully opened to permit inspection ofthe the usual packing and having a central bore to 15 castings and themold, andquick removal of the receive a piston rod I5 extending upwardlycastings. therefrom for `a purpose hereinafterv explained.

. To this end, I have providedv a molding appa- The upper end of thecylinder Il is closed by a ratus which utilizes a hinged mold adapted toplate I6, having a central bore I1 through which pouring of thecastingmetal. The rquick `openternally threaded peripheral boss I8concentric ing and the accessibility of the mold parts perwith the boreand receiving a rod packing I9 mit use of insertsy of differentmaterials, and which is locked in place by a gland nut 20. The drawingor bleeding of thecastings to provide piston is moved by fluid pressure,preferably air j under high pressure, admitted through 'inlet 25 Withthe above and other objects and advanconduits 2I in the base plate andthe upper plate, tageous features in view, my invention consists thelower conduit communicating with an inlet of. a novel arrangement ofparts more fully dischamber 22 which communicates with the inteclosed inthe detailed description following, in rior of the Ycylinder below thepiston and accomand more specifically dener in the claims apthe pistonis in down position. The inlet conpended hereto. l duits are threaded toreceive uid pressure t- In the drawings, tings, and the fluid pressuresupply and exhaust Fig. l is a front elevation of the apparatus, iscontrolled by hand valve or foot valve 'con- Fig. 3, is generallyelliptical in form, and is proclosed;

Fig. 2 is a side elevation thereof, parts being vided with bores 24 atthe ends which receive in `section and other parts broken away; supportrods 25, the lower 4ends of these rods be- Fig. 3 is a top plan viewthereof, and ing stepped, see Fig. 2, and set into recesses or tions inopened position. 25 have heads 26 secured to the upper ends i I havefound it desirable to provide a simple, thereof, in which spacing shafts21 are mounted,

inexpensive mold for casting metals, the mold see Figs. 1 and 2.

being permanent, and opening fully to permit Referring now to Fig. 2,the piston rod I5 ing so as to facilitate pouring. The use ofperthereof; a central cheek member 29 acts as a manent metal moldsinsures castings that are base for the outer mold sections and has adeaccurate in size, are smooth-surfaced, and repending boss 30 locked tothe piston rod and quire very little machining and nishing. Morethecross rod, and end plate portions 3| which surface of the castings. thecross rod. The parts 32 contact vertical guide The preferredconstruction utilizes two hingedchannels 34 formed in the heads 26,which funcly joined mold sections, which are pneumatition to guide theupward movement of the cencally opened to a horizontal position, andswing tral cheek member, and the parts 33 have limit suitable openings38 in the upper closure plate I6 and have resilient washers 31 whichcontact the lower face of the plate I6 to limit opening movement of themold parts.

Two hinged mold sections 38, 39 are utilized, having hinge rings 46, 4|which embrace the cross rod 28, and cam strips 42, 43 which slidinglyengage cam cylinders 44, 45 of the heads 26. Spring arms 46, 41 aresecured to the mold sections and extend around the associated spacingshafts 21. Each mold section has one or more mold recesses 48, with'inlets 49 and bottom connections 50.

The operation of the improved casting apparatus may now be explained:With the mold sections in the position shown in Fig. 1, fluid material,such as molten metal, is poured into the inlets, to completely nll themold recesses and the bottom connections. The molten metal quicklychills, and compressed air is admitted to force the piston upwardly,thus causing a simultaneous upward movement of the cheek section and aswinging movement oi' each mold section, until the mc-ld sections arehorizontal, as indicated in Fig. 4. These movements break the castingsfrom the mold recesses and permit quick removal; the mold recesses maythen be examined, and cleaned if necessary, and the air pressurereversed to pull the cross rod and the associated mold sections andcheek section, downwardly to again close.

It is thus clear that the improved mold includes separable moldsections, which are opened horizontally to facilitate removal of thecastings, and to permit inspection, the parts closing tightly underresilient pressure to receive the poured metal. This construction ofmold is particularly suitable for simple castings such as electricirons, clutch plates, ily wheels, gear wheels, and the like, thesecastings being quickly and economically made. The fiat mold sections arereadily manufactured, and may have liners if desired which are mostsuitable for the material being cast; moreover, the pouring may be frombelow, under pressure. The resulting castings are uniform, accurate insize, and smooth surfaced, thus requiring a minimum of machining andnishing.

While I have described a specific constructional embodiment of myinvention designed for metal castings, the structure of the mold issuitable for casting other materials, such as cements, plaster of Paris,glass, or other uid material; changes in the size and shape oi theparts, and in the materials thereof, may be made to suit therequirements for different molding duties, within the spirit and thescope of the invention as defined in the appended claims.

I claim:

1. Ina casting machine, a frame, three mold sections movably mounted insaid frame and including a central cheek member slidably mounted in saidframe and having a pivot, the outer mold sections having mold recessesand being hinged to said pivot on the cheek member, means positioned onsaid frame for moving said pivot, and guide members on the frame andcooperating arms on the outer mold sections for positioning said outermold sections at a predetermined angle to the cheek member.

2. In a casting machine, a frame, three mold sections movably mounted insaid frame and including a central cheek member slidably mounted in saidframe and having a pivot, the outer mold sections having mold recessesand being hinged to said pivot on the cheek member, means positioned onsaid frame for moving said pivot, and guide members on the frame andcooperating cam elements on the outer mold sections for positioning saidouter mold sections in contacting engagement with the cheek member.

3. In a casting machine, a frame, three mold sections movably mounted insaid frame and including a central cheek member slidably mounted in saidframe and having a pivot, the outer mold sections having mold recessesand being hinged to said pivot on the cheek member, means positioned onsaid frame for moving said pivot, guide members on the frame,cooperating arms on the outer mold sections for positioninglsaid loutermold sections at a predetermined angle to the cheek member, and camelements on the outer mold sections for positioning said outer moldsections in contacting engagement with the cheek member.

4. In a casting machine, a frame, a mold base mounted to slide therein,and a mold section movably mounted thereon, said mold section having amold recess and being hinged to a pivot on the base, means for slidingsaid base to move said pivot, and guide means on the frame andcooperating arm means on the mold section for positioning said moldsection at a predetermined angle to the base.

5. In a casting machine, a frame, a mold base mounted to slide therein,and a mold section movably mounted thereon, said mold section having amold recess and being hinged to a pivot on the base, means for slidingsaid base to move said pivot, and guide means on the frame andcooperating cam means on the mold section for positioning' said moldsection in contacting engagement with the base.

6. In a casting machine, a frame, a mold base mounted to slide therein,and a mold section movably mounted thereon, said mold section having amold recess and being hinged to a pivot on the base, means for slidingsaid base to move said pivot, guide means on the frame, cooperating armmeans on the mold section for positioning said mold section at apredetermined angle to the base, and cooperating cam means on the moldsection for positioning said mold section in contacting engagement withthe base.

ALBERT W. MORRIS.

